Question

How to check if a string is null in Java

Answer 1

public class MyClass {
    public static void main(String args[]) {
        String str = null;
        
        if (str == null) 
            System.out.println("yes");
        else
            System.out.println("no");
            
        str = "";
        
        if (str == null) 
            System.out.println("yes");
        else
            System.out.println("no");            
    }
}
  
  
  
  
/*
run:
  
yes
no
 
*/

 

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